Connection of the power regeneration common
When wiring for connecting the power regeneration common converter (FR-CV) to the inverter, make sure to match the terminal
symbols (P/+, N/-) on the inverter and on the power regeneration common converter.
The FR-CV is compatible with the FR-F820-02330(55K) or lower and the FR-F840-01160(55K) or lower.
After making sure that the wiring is correct and secure, set "2" in Pr.30 Regenerative function selection. (Refer to
Remove jumpers across terminals R/L1 and R1/L11 as well as across terminals S/L2 and S1/L21, and connect the power supply for the control
circuit to terminals R1/L11 and S1/L21. Do not connect anything to power input terminals (R/L1, S/L2, and T/L3). Incorrect connection will damage
the inverter. (The E.OPT fault (Option fault) occurs. (Refer to
Terminal P3 is equipped in the FR-F820-00770(18.5K) to 01250(30K), and FR-F840-00470(22K) to 01800(75K). When connecting multiple
inverters in parallel, always use either terminal P/+ or P3 for the connection. (Do not use terminals P/+ and P3 together.)
Do not install an MCCB across terminals P/+ and N/- (between terminals P/L+ and P/+ or between N/L- and N/-). Connecting the opposite polarity
of terminals N/- and P/+ will damage the inverter.
Use Pr.178 to Pr.189 (Input terminal function selection) to assign the terminals used for the X10 signal. (Refer to
Be sure to connect the power supply and terminals R/L11, S/L21, and T/MC1. Operating the inverter without connecting them will damage the
power regeneration common converter.
Always connect terminal RDY on the FR-HC2 to a terminal where the X10 signal or MRS signal is assigned on the inverter. Always connect
terminal SE on the FR-HC2 to terminal SD on the inverter. Not connecting these terminals may damage the FR-CV.
• The voltage phases of terminals R/L11, S/L21, and T/MC1 and the voltage phases of terminals R2/L1, S2/L2, and T2/L3 must
• Use the sink logic when the FR-CV is connected. It cannot be connected when the source logic is selected.
• Do not connect a DC reactor (FR-HEL) to the inverter when the FR-CV is connected.
2. INSTALLATION AND WIRING
2.8 Connection of stand-alone option units